文献类型：期刊文献

英文题名：Effects of productivity on biodiversity in forest ecosystems across the United States and China

作者：Liang, Jingjing[1] Watson, James V.[1] Zhou, Mo[1] Lei, Xiangdong[2]

第一作者：Liang, Jingjing

通信作者：Liang, JJ[1]

机构：[1]W Virginia Univ, Sch Nat Resources, Morgantown, WV 26506 USA;[2]Chinese Acad Forestry, Res Inst Forest Resource Informat Tech, Beijing 100091, Peoples R China

年份：2016

卷号：30

期号：2

起止页码：308-317

外文期刊名：CONSERVATION BIOLOGY

收录：;Scopus(收录号：2-s2.0-84959867132);WOS:【SCI-EXPANDED(收录号:WOS:000372304600008)】；

基金：We thank the United States Department of Agriculture Forest Service for providing the FIA data and the Wangqing Forestry Bureau of China for providing the FMPI data. Data analysis is supported in part by the United States Department of Agriculture McIntire-Stennis Act Fund WVA00104 and by the Division of Forestry and Natural Resources, West Virginia University. The Cooperative Alaska Forest Inventory is supported by the McIntire-Stennis Formula Grant, the University of Alaska Fairbanks School of Natural Resources and Agricultural Sciences, and the State of Alaska. The Forest Management Planning Inventory is supported by the 12th Five-Year Science and Technology Support Project (Grant No. 2012BAD22B02) of China. We also thank the handling editor, Y. Carmel, 2 anonymous reviewers, and A. D. McGuire for their constructive comments on the entire manuscript. The R code for bootstrapping was developed by P.C. Tobin.

语种：英文

外文关键词：biological conservation; continental scale; forestry; geostatistics; species richness; unimodal; conservacion biologica; escala continental; geoestadistica; riqueza de especies; silvicultura; unimodal

摘要：In the global campaign against biodiversity loss in forest ecosystems, land managers need to know the status of forest biodiversity, but practical guidelines for conserving biodiversity in forest management are lacking. A major obstacle is the incomplete understanding of the relationship between site primary productivity and plant diversity, due to insufficient ecosystem-wide data, especially for taxonomically and structurally diverse forest ecosystems. We investigated the effects of site productivity (the site's inherent capacity to grow timber) on tree species richness across 19 types of forest ecosystems in North America and China through 3 ground-sourced forest inventory data sets (U.S. Forest Inventory and Analysis, Cooperative Alaska Forest Inventory, and Chinese Forest Management Planning Inventory). All forest types conformed to a consistent and highly significant (P < 0.001) hump-shaped unimodal relationship, of which the generalized coefficients of determination averaged 20.5% over all the forest types. That is, tree species richness first increased as productivity increased at a progressively slower rate, and, after reaching a maximum, richness started to decline. Our consistent findings suggest that forests of high productivity would sustain few species because they consist mostly of flat homogeneous areas lacking an environmental gradient along which a diversity of species with different habitats can coexist. The consistency of the productivity-biodiversity relationship among the 3 data sets we examined makes it possible to quantify the expected tree species richness that a forest stand is capable of sustaining, and a comparison between the actual species richness and the sustainable values can be useful in prioritizing conservation efforts. Efectos de la Productividad sobre la Biodiversidad en Ecosistemas Boscosos de los Estados Unidos y China En la campana global contra la perdida de la biodiversidad en los ecosistemas boscosos, los administradores necesitan conocer el estado de la biodiversidad de los bosques, pero son pocas las guias basicas para la conservacion de la biodiversidad en el manejo de bosques. El principal obstaculo es el entendimiento incompleto de la relacion entre la productividad primaria del sitio y la diversidad vegetal. Esto se debe a la informacion insuficiente de todo el ecosistema, especialmente para los ecosistemas boscosos taxonomica y estructuralmente diversos. Investigamos los efectos de la productividad del sitio (la capacidad inherente del sitio para generar madera) sobre la riqueza de especies de arboles en 19 ecosistemas boscoso en America del Norte y China por medio de tres conjuntos de datos de inventario de bosques en tierra de origen (Analisis e Inventario de Bosques de EUA, Inventario Cooperativo de Bosques de Alaska e Inventario de Planeacion de Manejo de Bosques de China). Todos los tipos de bosque se ajustaron a una relacion unimodal con forma de curva convexa, consistente y altamente significativa (P < 0.001), de la cual el coeficiente generalizado de determinacion tuvo un promedio de 20.5% en todos los tipos de bosque. Esto quiere decir que la riqueza de especies de arboles incremento primero conforme la productividad aumento a una tasa progresivamente mas lenta, y despues de alcanzar un maximo, la riqueza comenzo a disminuir. Nuestros hallazgos consistentes sugieren que la alta productividad de los bosques podria sostener a pocas especies, pues constan principalmente de areas planas y homogeneas que carecen de un gradiente ambiental a lo largo del cual puedan coexistir especies diversas con diferentes habitats. La consistencia de la relacion productividad-biodiversidad entre los tres conjuntos de datos que examinamos posibilita la cuantificacion de la riqueza esperada de especies de arboles que un bosque en pie es capaz de sostener, y una comparacion entre la riqueza actual de especies y los valores sustentables puede ser util en la priorizacion de esfuerzo de conservacion. Resumen